Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Name:	us-gaap_StockIssuedDuringPeriodValueNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Subsequent Events (Details) - USD ($) $ in Thousands		1 Months Ended		12 Months Ended
Subsequent Events (Details) - USD ($) $ in Thousands	Jan. 31, 2020	Jan. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Subsequent Event [Line Items]
Shares issued during the period (in shares)		6,900,000	1,207,980
Value of shares issued in public or private offerings		$ 82,374	$ 13,686	$ 6,611	$ 87,990	$ 13,686
TS Biotechnology Holdings, LLC \| Subsequent Event
Subsequent Event [Line Items]
Shares issued during the period (in shares)	5,972,696
Value of shares issued in public or private offerings	$ 35,000